rule win_scarabey_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.scarabey."
        info = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.6.0"
        signator_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.scarabey"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    /* DISCLAIMER
     * The strings used in this rule have been automatically selected from the
     * disassembly of memory dumps and unpacked files, using YARA-Signator.
     * The code and documentation is published here:
     * https://github.com/fxb-cocacoding/yara-signator
     * As Malpedia is used as data source, please note that for a given
     * number of families, only single samples are documented.
     * This likely impacts the degree of generalization these rules will offer.
     * Take the described generation method also into consideration when you
     * apply the rules in your use cases and assign them confidence levels.
     */


    strings:
        $sequence_0 = { 7421 8d45cc 50 897dcc c745f0b8185300 c745e810000000 e8???????? }
            // n = 7, score = 100
            //   7421                 | je                  0x23
            //   8d45cc               | lea                 eax, [ebp - 0x34]
            //   50                   | push                eax
            //   897dcc               | mov                 dword ptr [ebp - 0x34], edi
            //   c745f0b8185300       | mov                 dword ptr [ebp - 0x10], 0x5318b8
            //   c745e810000000       | mov                 dword ptr [ebp - 0x18], 0x10
            //   e8????????           |                     

        $sequence_1 = { 03048dc0375800 eb02 8bc2 f6402480 0f8571ffffff 33f6 3bde }
            // n = 7, score = 100
            //   03048dc0375800       | add                 eax, dword ptr [ecx*4 + 0x5837c0]
            //   eb02                 | jmp                 4
            //   8bc2                 | mov                 eax, edx
            //   f6402480             | test                byte ptr [eax + 0x24], 0x80
            //   0f8571ffffff         | jne                 0xffffff77
            //   33f6                 | xor                 esi, esi
            //   3bde                 | cmp                 ebx, esi

        $sequence_2 = { ff15???????? 6a01 03f3 e9???????? 8d9508d7ffff 52 8d8d78d5ffff }
            // n = 7, score = 100
            //   ff15????????         |                     
            //   6a01                 | push                1
            //   03f3                 | add                 esi, ebx
            //   e9????????           |                     
            //   8d9508d7ffff         | lea                 edx, [ebp - 0x28f8]
            //   52                   | push                edx
            //   8d8d78d5ffff         | lea                 ecx, [ebp - 0x2a88]

        $sequence_3 = { 8b542404 85d2 750a 6805400080 e8???????? 8b01 52 }
            // n = 7, score = 100
            //   8b542404             | mov                 edx, dword ptr [esp + 4]
            //   85d2                 | test                edx, edx
            //   750a                 | jne                 0xc
            //   6805400080           | push                0x80004005
            //   e8????????           |                     
            //   8b01                 | mov                 eax, dword ptr [ecx]
            //   52                   | push                edx

        $sequence_4 = { eb4b db8540d6ffff e8???????? 8b8d08d7ffff 8d95dcfbffff 0fb7c2 }
            // n = 6, score = 100
            //   eb4b                 | jmp                 0x4d
            //   db8540d6ffff         | fild                dword ptr [ebp - 0x29c0]
            //   e8????????           |                     
            //   8b8d08d7ffff         | mov                 ecx, dword ptr [ebp - 0x28f8]
            //   8d95dcfbffff         | lea                 edx, [ebp - 0x424]
            //   0fb7c2               | movzx               eax, dx

        $sequence_5 = { f6452440 740c c78634030000949b5700 eb10 f6452420 740a }
            // n = 6, score = 100
            //   f6452440             | test                byte ptr [ebp + 0x24], 0x40
            //   740c                 | je                  0xe
            //   c78634030000949b5700     | mov    dword ptr [esi + 0x334], 0x579b94
            //   eb10                 | jmp                 0x12
            //   f6452420             | test                byte ptr [ebp + 0x24], 0x20
            //   740a                 | je                  0xc

        $sequence_6 = { 894708 8b45c8 89470c eb60 d945c4 d95f08 eb58 }
            // n = 7, score = 100
            //   894708               | mov                 dword ptr [edi + 8], eax
            //   8b45c8               | mov                 eax, dword ptr [ebp - 0x38]
            //   89470c               | mov                 dword ptr [edi + 0xc], eax
            //   eb60                 | jmp                 0x62
            //   d945c4               | fld                 dword ptr [ebp - 0x3c]
            //   d95f08               | fstp                dword ptr [edi + 8]
            //   eb58                 | jmp                 0x5a

        $sequence_7 = { e8???????? 6a0f ff15???????? 50 8d4c247c e8???????? }
            // n = 6, score = 100
            //   e8????????           |                     
            //   6a0f                 | push                0xf
            //   ff15????????         |                     
            //   50                   | push                eax
            //   8d4c247c             | lea                 ecx, [esp + 0x7c]
            //   e8????????           |                     

        $sequence_8 = { 33f6 56 40 52 89b524d3ffff 89b528d3ffff a3???????? }
            // n = 7, score = 100
            //   33f6                 | xor                 esi, esi
            //   56                   | push                esi
            //   40                   | inc                 eax
            //   52                   | push                edx
            //   89b524d3ffff         | mov                 dword ptr [ebp - 0x2cdc], esi
            //   89b528d3ffff         | mov                 dword ptr [ebp - 0x2cd8], esi
            //   a3????????           |                     

        $sequence_9 = { 6a00 6a00 6a01 8d9554d2ffff 52 ff15???????? a1???????? }
            // n = 7, score = 100
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   6a01                 | push                1
            //   8d9554d2ffff         | lea                 edx, [ebp - 0x2dac]
            //   52                   | push                edx
            //   ff15????????         |                     
            //   a1????????           |                     

    condition:
        7 of them and filesize < 3580928
}